Mistral SUP Fins

SUP fin compatibility guide

Which Fin Fits My Mistral SUP?

Mistral is a long-running SUP and windsurf brand sold both directly and through Lidl in several European markets, which means a lot of people own one without necessarily knowing much about it. The good news is that every model we track — Spirit, Emotion, Adventurist Air, Kailua, Santa Monica and Sunburst — uses a standard US Box fin. That's the industry's most common system, so a US Box replacement fin from Eisbach Riders fits correctly no matter which Mistral board you have, whether it came from a specialist retailer or a Lidl seasonal drop. Select your exact model below to see the fin we'd recommend.

Multiple fin systems, one brand

Model Fin box Fit
Spirit 12'6 US Box ✓ Universal fit
Emotion 14'0 US Box ✓ Universal fit
Adventurist Air 12'6 US Box ✓ Universal fit
Kailua 11'5 US Box ✓ Universal fit
Santa Monica 11'6 US Box ✓ Universal fit
Sunburst 10'6 US Box ✓ Universal fit

Can't find your exact model? Try the full SUP Fin Finder →

Which Fin System Does Your Board Use?

Not Sure Which Model You Have?

  • The model name is usually printed on the rail or near the tail.
  • Board length in feet is usually printed on the nose or deck.
  • Production year is sometimes printed near the fin box on newer boards.
  • The fin-box shape tells you the system: a raised box with a screw is US Box, a soft molded fin is Fixed/iFin, and side-by-side clip slots are Quick-Lock.
Still unsure? Use the SUP Fin Finder →

Popular Model Families

Sunburst 10'6
Fin system: US Box
Recommended replacement: Classic Fin 9″

The Sunburst is Mistral's entry-level all-round board — often the model sold through Lidl's seasonal drops — and it runs a standard US Box fin, same as the rest of the range. Our Classic Fin 9″ is a manoeuvrable shape suited to everyday, all-round paddling.

Shop compatible US Box fins →
Adventurist Air 12'6
Fin system: US Box
Recommended replacement: Touring Fin 9″

Adventurist Air is Mistral's longer, touring-oriented board and uses the same US Box fin box as the rest of the lineup — only the fin shape should change. Our Touring Fin 9″ is built for straighter tracking over longer distances.

Shop compatible US Box fins →

Which Fin Should I Choose?

This only applies if your board takes a US Box fin — check the table above first.

All-round / touring
Touring Fin 9″
  • Everyday paddling
  • Tracking on flat water
  • Lakes and longer tours
Shallow water / river
Shallow Fin 6″
  • Shallow water
  • Rivers and creeks
  • Avoiding bottom contact
Performance / race
Race Fin 9″
  • Speed
  • Straighter tracking
  • Race and downwind boards

Check These 4 Things Before Ordering

1
Board model
Confirm your exact model — ranges within the same brand can use different fin systems.
2
Fin system
Identify whether your board uses US Box, Quick-Lock, Slide-In, or a fixed Fixed/iFin.
3
Fin-box condition
Check the box or track isn't worn or damaged before fitting a new fin.
4
Model year
Some brands have changed fin systems across generations — check when your model changed if you're unsure.

Frequently asked questions

Are Lidl Mistral SUPs the same as regular Mistral boards for fin compatibility?
Yes. Whether your Mistral board was bought through Lidl or a regular retailer, it uses the same US Box fin system, so the same replacement fins fit.
What fin box does the Mistral Adventurist Air use?
US Box — the same system used across the whole Mistral inflatable range we track, including the Spirit, Emotion, Kailua, Santa Monica and Sunburst.
Do all Mistral boards use the same size fin?
They all use US Box, but board length varies a lot — from the 10'6 Sunburst to the 14'0 Emotion — so the ideal fin length differs even though the box is the same.

Learn More About SUP Fins

SUP Fin Finder
Find the correct fin from your exact board model.
Identify Your Fin Box
Not sure what system your board uses? Identify it here.
US Box Fins Explained
How the most common fin system works and what fits it.
Quick-Lock Fins Explained
How tool-free Quick-Lock fin boxes work and what fits them.

Find Fins For Another SUP Brand

Red Paddle CoStarboardFanaticNaishIndianaBluefinJobeiRockerDecathlon Itiwit View all SUP brands →
Fin Finder SUP Your board Your fins

What SUP do you have?

Choose your board brand and model. We'll identify its fin system and show you fins that fit.

Not sure which model you have? See how to identify your fin box →

Board not listed? Identify my fin system→ · Tell us what's missing→

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How the fin finder works

01

Select your board brand

Choose from Red Paddle, Decathlon, Fanatic, Starboard and more.

02

Choose your exact model

We use your model — and model year where necessary — to determine the fin system.

03

Get your compatibility result

We'll show a compatible Eisbach Riders fin when we have one. If we don't, we'll tell you which system to look for instead.

Can't find your SUP?

Our compatibility database is constantly expanding. If your exact board isn't listed, identify your fin box manually or tell us the brand and model.

Identify my fin box →

Tell us which board is missing

How we verify compatibility

We map SUP brands and models to their fin systems using manufacturer specifications and product information. If we can't confidently verify a fit, we'll tell you rather than recommend the wrong fin.

Database last updated August 2026 · 180 SUP models mapped